i ordered 25 chicks to arrive in june, and i was buying all my supplies in advance. i bought dumor chick start/grower 20% from Tractor Supply (it's the only kind they had), but no where on the bag does it say medicated.... do you have to feed medicated, i dont think the hatchery (Welp) vaccinates them for Coccidiosis. i don't know what to do? any advice? thanks from a nervous chick mom to be!